feat: add personal webhook notification backend #2647

Job	Run time
Linting and tests / Lint database migrations	59s
Linting and tests / Lint entire project	2m 7s
Linting and tests / Lint, test, and build frontend	1m 35s
Linting and tests / Test technical documentation	18s
Linting and tests / Ensure database migrations drop columns the correct way	7s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: True)	4m 34s
Linting and tests / Backend Tests: Plugin	37s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: False)	4m 28s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: True)	4m 18s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: False)	4m 11s
Linting and tests / Helm Chart Unit Tests	20s
Linting and tests / mypy	1m 36s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: True)	3m 43s
Linting and tests / Unit tests - Migrators	27s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: False)	4m 2s
Snyk security scan / Snyk security scan	1m 18s
Linting and tests / Standard e2e tests (11.2.0) / Grafana: 11.2.0	8m 3s
Linting and tests / Standard e2e tests (10.3.0) / Grafana: 10.3.0	8m 18s
Linting and tests / Standard e2e tests (latest) / Grafana: latest	9m 57s
	1h 0m 58s

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